Plug-valve.



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UNiinn STATES PATENT OFFICE.

FRANK M. ASHLEY, OF NEV YORK, N. Y.

PLUG-VALVE.

SEECIFIATIN forming part Of Letters Patent N 0. 684,399, dated October15, 1901.

Application filed April 27,1899. Serial No. 714,686. (No model.)

Beit known that LFRANK M.AsHLnY,a citizen of the United States,residin gat NewYork, in the county of Kings and State of New York, have inventedcertain new and useful Improvements in Plug-Valves, of which thefollowingis a full, clear, and exact specification.

This invention relates to plug-valves; and its obj ect is to construct avalve which shall be substantially self-lubricating.

It has heretofore been proposed to construct plug-valves having passagesin the casing thereof whereby oil may be supplied to the differentbearing-surfaces of the plugin a casing. This, however, isobjectionable, for the reason that if the plug be removed the oil willrun' out of its reservoir or if the valve be adjusted the iiow of oilwill either be restricted or uncontrolled, according as the valve isforced into or out of its seat.

According to myinvention I propose to provide a valve in which the plugmay be adjusted without interfering with the lubrication thereof andfrom which, if desired, the plug may be entirely removed withoutallowing the oil to escape from its reservoir.

The invention will be more particularly described hereinafter withreference to the forms illustrated iu the accompanying draw ings, inwhich- Figure 1 is a sectional view of a valve elnbodying my invention.Fig. 2 is a side view of the plug. Fig. 3 is a horizontal section online a: of Fig. 2. Fig. 4 is a plan view of the plug. Fig. 5 is anenlarged detail view of the absorbent material. Fig` 6 is a top view ofthe valve shown in Fig. 1. Fig. 7 is a sectional view of a modified formof valve, and Fig. 8 is a horizontal sectional view of the modification.

Referring more particularly7 to the drawings, 1 and 2, respectively,represent the inlet and outlet openings of the valve-casing 3. Thecasing 3 is provided with the usual coneshaped seat, into which the plug4 is adapted to iit. The stem 5 of the plug is provided with a passageor reservoir 6, leading to a transverse passage 7 in the plug, occurringat the upper bearing-surfaces 8. From the passage 7 one or more passages9 9 extend downward to a lower transverse passage 10, occurring at thelower bearing-surfaces between the plug and the seat. In order that theflow of the lubricant may be properly restricted, I prefer to provide abody of absorbent material 11 in each of the transverse passages 7 and10, which may extend the entire length of the passage and rub againstthe face of the bearing, if preferred. In the drawings, 12 represents anannular bushing upon the valvecasing adapted to receive a cap 13, thelatter serving to hold a sleeve 14 in position against a ring 15 ofpacking material which rests upon a shoulder 1G upon the plug 4. Ifpreferred, one or more rings of lubricating material 17 17 may belocated in the cap and sleeve at points where they will bear against theplug 4. In order to loosen the plug in adjusting the valve, I provide ascrew 1S in the casing, impinged against the lower end of the plug andadapted to raise the same out of its seat. By screwing down the cap 13the plug may be forced into its seat.

In operation the oil or other lubricant is poured into the passage 6 andfrom there slowly passes through the porous material 11 in the passage 7to the bearing-surfaces 8 and also to the passages 9 9, through which itflows through the transverse passage 10 and the porous material 11therein. The 1ubricant slowly passes through the absorbent material 11in the passage 10v to the lower bearing-surfaces.

It will be observed that should the plug be entirely removed from thecasing the lubricant will not run out, but will be held in place by theporous material.

Having thus described my invention, I declare that what 1 claim as new,and desire to secure by Letters Patent, is

1. In a plu g-valve, the combination of a cas-'- ing having an upper anda lower seating, a plug adapted to engage said seatings, and havingtransverse passages opening upon the same, a reservoir in said plug, anda passage or passages in said plug leading from said reservoir to saidtransverse passages, sub stantially as described.

2. In a plug-valve, the combination of acasing, having an upper and alower seating, a plug adapted to engage said seatings, and havingtransverse passages opening upon the same, a reservoir in said plug, apassage or passages in said plug leading from said res- ICO ervoir tosaid transverse passages, and porous material in said transversepassages, substantially as described.

3. In a plug-valve, the combination with the seatngs, of a plug having areservoir, and passages within said plug extending from said reservoirto the upper and lower seatings, substantially as described.V

4. In a plug-valve, the combination with the seatings, of a. plug havinga reservoir therein, upper and lower transverse passages in said plugextending to said seatings, a passage between said reservoir and saidupper transverse passage, and a substantially vertical passage orpassages in said plug from said upper to said lower transverse passage,substantially as described.

5. In a plug-valve, the combination with the seatings of a plug having areservoir therein, upper and lower transverse passages in said plugextending to said seatings, a passage between said reservoir and saidupper transverse passage, a'substantially vertical passage or passagesin said plug from said upper to said lower transverse passages, andporous material in said transverse passage, substantially as described.

In testimony whereof I have afxed my signature in presence of twowitnesses.

FRANK M'. ASHLEY.

Witnesses:

C. V. EDWARDS, ALEX. FERGUSON.

